Photovoltaic hydrogen production and energy storage technology research

How efficient is solar hydrogen production?

The theoretical efficiency of this solar hydrogen production system is 36.5% (Kaleibari et al., 2019). However, the energy obtained from the full-spectrum utilization of solar energy is predominantly thermal energy, with an electrical energy to thermal energy ratio of less than 1:2.

Can a solar photovoltaic-thermal hydrogen production system be based on full-spectrum utilization?

In this study, a solar photovoltaic-thermal hydrogen production system based on full-spectrum utilization is proposed. By using a spectral filter, longer-wavelength sunlight that cannot be utilized by photovoltaic cells is separated and converted into thermal energy.

What are the key technologies for solar hydrogen production?

This article analyzes and summarizes the research results of key technologies for solar hydrogen production, and draws the following conclusions: (1) The solar photovoltaic system provides electricity for the hydrogen production system and generates heat through an electric heater to heat the electrolytic cell.

Can solar energy be used for hydrogen production?

Concentrated solar energy technology and photovoltaic technology can be used to provide the required thermal and electrical energy for the hydrogen production system, respectively [12, 13, 14, 15].

How can solar thermal systems improve the efficiency of hydrogen production systems?

The solar thermal system provides the required heat for the hydrogen production system. By using the MPPT algorithm and model optimization, the system efficiency can be improved by 16.30%, providing a reference route for the coupling of photovoltaic-photothermal systems with electrolytic cells.

What is a full-spectrum solar hydrogen production system?

A full-spectrum solar hydrogen production system is proposed. The electric and thermal energy supply-demand relationship is optimized. A solar-to-hydrogen efficiency of 39.0% is achieved in the proposed system. Energy losses associated with the solar-to-hydrogen pathway are analyzed.